Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c3044aea43ab93d…

MALICIOUS

PDF

77.8 KB Created: 2021-02-13 20:46:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 68a5b1d377301e78c8a20133ae18564e SHA-1: 3c53106b17b9a22fa23f70095f6a1f778a1589d5 SHA-256: 3c3044aea43ab93d7f7b524cceda3480aeab451f56cf3564293129645e3b4d2c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://seumenha.ru/aws?utm_term=bailey+and+love+surgery+pdf+google+drive PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374956/normal_60273f1600c8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393345/normal_5ffe562e9d1e9.pdfIn PDF document text
    • https://garowowo.weebly.com/uploads/1/3/6/0/136033653/xiliful_dapugedadavavek.pdfIn PDF document text
    • http://labiosdewonda.com/pedinawotogavllyc2.pdfIn PDF document text
    • https://cdn.sqhk.co/pesofesidoke/jer1ggy/rolamabovum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5fde64e94cb5f.pdfIn PDF document text
    • http://meetdouche.xyz/scratch_2_offline_editor_pcge2zm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388157/normal_60024ab33307e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450624/normal_5fd1a72370f86.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/iajg9jh/vupujojinunazejan.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/ijaPfgg/hillsong_praise_worship_songs_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/vjaggii/vorutilemetusokaz.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/lizevabedezituleyjl6m.pdfIn PDF document text
    • http://kanshoper.site/39426279654jb1h1.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/bBia0hg/37764016025.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 5420 bytes
SHA-256: 4d38e0a97a81812388e16ced55d6253b8fba081be34fb4ba6b12e6f042dd4e3f
font_01_sfnt_off00010725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10725 10212 bytes
SHA-256: e1f62fd1a2113a3bbe1471aa83618ad9abd6f7b1fec763b4e0c661f562832247

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